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How to Calculate Capacitor in Series

A typical capacitor connection in series will look like the one I draw below:

“In series” is literally saying that the capacitors are wired "serially", one after another (no seperate branches), When a potential difference V is applied across several capacitors in series connection, the capacitors have identical charge q. The sum of the potential differences across all the capacitors (in this case C1,C2&C3) is equal to the applied potential difference V across the two ends of series connetion, in this case the left side of C1 and right side of C3.